Source analyses of the first positive component P1 (40–50 ms) in controls and BR participants.

Each sLORETA brain source was obtained from the within-group comparison of painless, control stimuli (corresponding to a virtual zero condition of somatosensory stimulation) with Under Threshold, Threshold or Over Threshold conditions. Cortical activities elicited by each of these three latter stimuli were all significant, and their main generators were all located in the postcentral gyrus.BA = Brodmann Area; MNI coords = Montreal Neurological Institute coordinates.